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Wheat multiple gene polymerization breeding method by recurrent selection of molecule labeling and hypochromatosis combination

A molecular marker and recurrent selection technology, applied in the fields of genetics, breeding and biology, can solve problems such as difficult genotypes, and achieve the effects of reducing workload, improving reliability, and increasing reliability and stability.

Inactive Publication Date: 2004-12-15
JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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Problems solved by technology

[0007] The present invention has the advantages of: using the chromosome disappearance method to induce double haploids to overcome the disadvantages of using too many parents and complicating the separation of offspring to stabilize genotypes in a short period of time when using Taigu GMS recurrent selection breeding. Moreover, the reliability of the selection of excellent offspring is improved through molecular marker-assisted selection, so as to achieve the purpose of quickly aggregating multiple breeding traits

Method used

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Embodiment

[0009] 1. Construction of reincarnation selection groups:

[0010] Yiyangmai No. 5, Yangmai No. 158, Yangmai No. 9, Yangmai No. 10, Yangmai No. 11, Ningmai No. 8, Wangshuibai, Sumai No. 3, Annong 8455, An98108, An92484, Bai Fifteen varieties such as Huomai, Kanto 107, 02y293, and Alondra were used as parents, and each parent was hybridized with Taigu nuclear sterile plants to obtain hybrid seeds, and the seeds were sown to obtain the F1 generation, and the sterile plants were taken out and compared with the original selection. Each parent was backcrossed once so that the genetic composition of the recurrent male parent reached 75%, and the sterile seeds of the backcrossed progeny were mixed in equal amounts to form a recurrent selection population.

[0011] 2. The introduction of excellent parents and mutual interaction within the population:

[0012] Breeds or strains that are currently outstanding in production, such as Ningmai 9, Yangmai 12, Yumai 50, Wanmai 18, Yang 00118...

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Abstract

The breeding method combines establishment of Taigu nuclear sterile group, constant introduction of excellent parent, auxiliary selection with molecular marker, purification of heterotic genotype descendant through chromosomal elimination technology to obtain genetically stable wheat germ plasm. The present invention utilizes the biological technology in breeding wheat variety fully to from one high efficiency and fast polymerized wheat breeding technology.

Description

technical field [0001] The invention relates to the fields of genetic breeding and biotechnology, in particular to a wheat multi-gene aggregation breeding method which combines molecular markers and chromosome disappearance methods to cultivate double haploids and Taigu genic male sterile recurrent selection. technical background [0002] The main task of wheat breeding is to recombine excellent genes from different sources to obtain a wide range of genetic variation, and to screen out genotypes that meet the breeding goals. The conventional sexual hybridization method can only combine the good genes of a few wheat parents, and it takes a long time to make the genes homozygous and the characters stable. If the good traits of multiple parents are aggregated, it will take longer time, even if polygenetic recombination, it is difficult to breed polygenic polygenic strains through phenotypic variation. The discovery of Taigu male sterile (Tal) wheat provides the possibility of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01H1/08
Inventor 马鸿翔周淼平陆维忠任丽娟张旭余桂红黄益洪
Owner JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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